#include <iostream>
using namespace std;

int main() {
    long int a, b, c, i, j, k, n, s, d;
    
    cout << "Nhap a,b,c= ";
    cin >> a >> b >> c;
    
    cout << "Nhap N= ";
    cin >> n;
    
    if (a > 0 && b > 0 && c > 0 && n > 0 && a <= 32000 && b <= 32000 && c <= 32000 && n <= 32000) {
        if ((a * a == b * b + c * c) || (b * b == c * c + a * a) || (c * c == a * a + b * b)) {
            cout << "a/" << a << " " << b << " " << c << " la bo ba so Pytago" << endl;
        } else {
            cout << "a/" << a << " " << b << " " << c << " khong la bo ba so Pytago" << endl;
        }
        
        s = 0;
        for (i = 1; i <= n - 2; i++) {
            for (j = i; j <= n - 1; j++) {
                for (k = j; k <= n; k++) {
                    if ((i * i == j * j + k * k) || (j * j == i * i + k * k) || (k * k == i * i + j * j)) {
                        s++;
                    }
                }
            }
        }
        
        cout << "b/" << s << endl;
    }
    
    return 0;
}

$#doanthevu$

Code C++ :

#include<bits/stdc++.h>
#define ll long long
using namespace std;
int main() {
    ll a, b, c, n, count = 0;
    bool qq;
    cin >> a >> b >> c >> n;
    qq = (a * a + b * b == c * c) || (a * a + c * c == b * b) || (b * b + c * c == a * a);
    if (qq) {
        cout<<a<<" " <<b<<" "<<c<<" "<<"la bo ba so Pytago "<< endl;
    } else {
        cout<<a<<" " <<b<<" "<<c<<" "<<"khong la bo ba so Pytago "<< endl;
    }
    for (a = 1; a <= n; a++) {
        for (b = a; b <= n; b++) {
            for (c = b; c <= n; c++) {
                if (a * a + b * b == c * c) {
                    count++;
                }
            }
        }
    }
    cout << count << endl;
    return 0;
}